CN112619212A - Adjustable water outlet device for sandstone wastewater radial flow sedimentation tank and application method - Google Patents
Adjustable water outlet device for sandstone wastewater radial flow sedimentation tank and application method Download PDFInfo
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- CN112619212A CN112619212A CN202011298762.6A CN202011298762A CN112619212A CN 112619212 A CN112619212 A CN 112619212A CN 202011298762 A CN202011298762 A CN 202011298762A CN 112619212 A CN112619212 A CN 112619212A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2444—Discharge mechanisms for the classified liquid
Abstract
The invention provides an adjustable water outlet device of a radial flow sedimentation tank for sandstone wastewater and an application method, the device comprises the radial flow sedimentation tank, a water inlet guide cylinder positioned in the middle of the radial flow sedimentation tank, a mud scraper and a mud discharge pipe which are arranged at the bottom of the radial flow sedimentation tank, a water outlet channel arranged at the upper part of the inner side wall of the radial flow sedimentation tank, a water outlet channel main pipe communicated with the water outlet channel, and at least two layered perforated water outlet pipes which are sequentially arranged at intervals from top to bottom along the inner wall of the radial flow sedimentation tank, the layered perforated water outlet pipes are fixed on the tank wall by using brackets, are connected with the water outlet channel main pipe outside the tank through communication valves, sampling pipes with sampling ports are arranged outside the tank by the layered water outlet pipes, sampling valves are arranged on the sampling pipes, and backwash hoses and fixedly laid backwash pipes are arranged on the outer wall of; the back-flushing pipe can be communicated with the layered perforated water outlet pipe through a back-flushing hose. The invention can realize multi-layer water outlet, and is provided with a measure for preventing sludge accumulation, so that settled and clarified water in the tank can be quickly discharged, and the utilization of water resources is ensured to be timely and maximized.
Description
Technical Field
The invention relates to a radial flow sedimentation tank structure or device for sandstone wastewater, in particular to an adjustable water outlet device for a sandstone wastewater radial flow sedimentation tank and an application method.
Background
The sandstone aggregate is the main raw material of concrete, is produced by a common domestic wet method, a large amount of clean water washes the surface coating powder of the finished aggregate to cause the discharge of a large amount of waste water with extremely high mud concentration, and the common radial sedimentation tank for the mud-water separation process for treating the waste water comprises a middle water inlet device, a peripheral water outlet device, an ultrahigh area, a clear water area, a transition area, a mud accumulation area and a mud scraping device. The production wastewater passes through the middle water inlet device, a flocculating agent is added to complete coagulation and precipitation, then the production wastewater flows to the peripheral water outlet device along the radial direction at a gradually reduced speed, and the silt settled in the bottom mud accumulation area is discharged to the dewatering device by the mud scraping device.
The conventional water outlet device is usually provided with a triangular weir or a horizontal thin-wall weir, clear water on the inner surface layer of the pool enters a collecting channel and a collecting main pipe through a weir top and is discharged out of the pool for recycling and reproduction. The suspended matter content SS of the sand washing wastewater is more than or equal to 100000g/l, the standard SS of reuse water is less than or equal to 100g/l, the diameter of a sand washing radial flow sedimentation tank is generally 20-50 m, the depth of a central tank is 4.0-7.2 m, the depth of peripheral water is 2.4-2.7 m, the sand production system is in an intermittent production operation mode, the wastewater is also discharged intermittently, after water inflow is stopped, wastewater particles in the radial flow sedimentation tank are rapidly and statically flocculated and settled, at the moment, a water outlet device can only take surface water, clear water which is hundreds to thousands of cubic meters below a weir crest cannot be discharged, the clear water stays in the tank and is finally mixed with bottom slurry, and the mud and water are separated again by a pressure pumping dehydration device, so that time, energy and labor.
Therefore, in practical engineering, it is necessary to develop a water outlet device which can conveniently discharge the residual clear water in the radial flow tank after the water inlet of the radial flow tank is stopped.
Disclosure of Invention
The invention aims to overcome the defect that a common radial flow sedimentation tank only has an upper-layer water outlet facility in the intermittent water inlet and intermittent operation states, and provides an adjustable water outlet device which has a simple structure and convenient operation, takes water layer by layer according to the height of a clear water area, can prevent a perforated collecting pipe in the tank from being deposited by suspended sediment during normal operation and an application method thereof.
The invention adopts the following technical scheme to realize the purpose:
the utility model provides a water installation with adjustable grit waste water radial flow sedimentation tank, includes radial flow sedimentation tank, is located the intake draft tube in the middle of the radial flow sedimentation tank, locates mud scraper and the mud pipe of radial flow sedimentation tank bottom, its characterized in that: the upper part of the inner side wall of the radial sedimentation tank is provided with a water outlet channel, and the bottom surface of the water outlet channel is provided with a water outlet channel main pipe communicated with the outside; at least two layered perforated water outlet pipes are sequentially arranged along the inner wall side of the radial flow sedimentation tank at intervals from top to bottom, each layered perforated water outlet pipe is fixed on the wall of the radial flow sedimentation tank by using a layered perforated water outlet pipe bracket, and each layered perforated water outlet pipe is connected with a water outlet channel main pipe outside the tank through a communicating valve; the layered water outlet pipe is provided with a sampling pipe with a sampling port outside the radial flow sedimentation tank, and the sampling pipe is provided with a sampling valve; a back washing hose and a fixedly laid back washing pipe are arranged on the outer wall of the radial flow sedimentation tank; the back-flushing pipe can be communicated with the layered perforated water outlet pipe through a back-flushing hose.
Furthermore, the sampling port can be connected with a quick bayonet of a backwashing hose, so that the sampling pipe can be used as a backwashing pipe at the same time, a one-way valve is arranged on the backwashing pipe, and a sampling valve arranged on the sampling pipe can be used as a backwashing valve at the same time.
Further, still including locating the water gauge in the radial flow sedimentation tank for water level layering water intaking in the monitoring pond.
Further comprises a water inlet pipe and a dosing pipe which are connected with the middle water inlet guide cylinder.
Furthermore, the concrete bottom plate of the water outlet channel is uniformly provided with a plurality of water outlet holes, and the water outlet holes are sealed by water outlet extraction plugs.
Furthermore, the water outlet hole and the water outlet lifting bolt are both designed into inverted cone structures.
Furthermore, the pipe diameter of the water outlet pipe with the layered holes is 200mm-300mm, the surface of the water outlet pipe with the layered holes is uniformly provided with the holes in a staggered mode, and the hole diameter is 25mm-30 mm.
An application method of the adjustable water outlet device for the sandstone wastewater radial flow sedimentation tank comprises the following steps:
A. after the water inlet pipe of the radial sedimentation tank stops feeding water, a flocculating agent is continuously fed through a dosing pipe until a large amount of alum flocs appear, and dosing is stopped, at the moment, the surface layer water at the weir top of the weir crest of the water outlet channel of the radial sedimentation tank is completely discharged from the water outlet channel, the water level falls to the upper clear water area and cannot be discharged, after the tank water is further settled, the water outlet lifting plug is lifted, and the upper clear water flows upwards into the water outlet channel through the water outlet hole and is discharged through the main water outlet channel pipe;
B. the pond water continues to fall to the middle layer clear water area, a sampling valve on a water outlet pipe with the layered opening at the top part is opened, after the detected water quality is qualified, a communicating valve between the water outlet pipe with the layered opening at the top part and a water outlet main pipe is opened, and clear water in the middle layer clear water area is discharged to the water outlet main pipe from the water outlet pipe with the layered opening at the top part;
C. the pond water continues to fall to the deep clear water area, the sampling valve on the water outlet pipe with the lower part of the layer of the opening is opened, after the detected water quality is qualified, the communicating valve between the water outlet pipe with the lower part of the layer of the opening and the water outlet main pipe is opened, and the clear water in the deep clear water area is discharged to the water outlet main pipe through the water outlet pipe with the lower part of the layer of the opening;
D. and finally, the radial flow sedimentation tank leaves a sludge accumulation area, and the concentrated slurry is discharged through a sludge discharge pipe.
Further, the method also comprises the following steps: the backwashing hose is connected with the sampling port in a buckling mode at regular intervals, the sampling valve is opened, clean water with certain water pressure in the backwashing hose respectively washes the water outlet pipes with the layered openings, the backwashing water pressure is not lower than 0.25Mpa, and the one-way valve prevents backwashing water from flowing back to pollute an external clean water pipe network.
Furthermore, when water is normally fed in and discharged out, the communication valve of each layered water outlet pipe, the sampling valve and the one-way valve (16) are closed.
The invention has the following beneficial effects:
1. after the water inflow of the radial flow sedimentation tank is stopped, the high-concentration suspended matter production wastewater in the tank is rapidly precipitated in a static state, and then can be continuously and flexibly discharged and recycled through the layered perforated water outlet pipe arranged in the invention, instead of allowing clear water to stay in the tank all the time, so that the water resource is effectively saved;
2. the invention utilizes the production characteristics of intermittent operation and intermittent wastewater discharge in sandstone production, discharges the wastewater through the layered perforated water outlet pipe, and can avoid that all clear water must be mixed with slurry again from the bottom and the slurry is separated again by a pressurizing pumping dehydration device;
3. the surface layer effluent when the radial flow sedimentation tank normally operates is not influenced.
Drawings
FIG. 1 is a side sectional view of one embodiment of the adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank;
fig. 2 is a top view of one embodiment of the adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank.
In the figure: 1-radial sedimentation tank, 2-water outlet channel, 3-middle water inlet guide cylinder, 4-mud scraper, 5-water inlet pipe, 6-clear water zone, 7-mud accumulation zone, 8-mud discharge pipe, 9-water outlet channel main pipe, 10-water outlet hole, 11-layered water outlet pipe, 12-layered water outlet pipe bracket with holes, 13-communicating valve, 14-sampling valve, 15-back flushing pipe, 16-one-way valve, 17-water outlet extraction plug, 18-water level meter, 19-dosing pipe, 6-1-weir top surface water, 6-2-upper clear water zone, 6-3-middle clear water zone, 6-4-deep clear water zone, 14-1-sampling port (bayonet type), 15-1-back flushing hose (one end is bayonet type).
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 and 2, one embodiment of the adjustable water outlet device for a radial flow sedimentation tank for sandstone wastewater of the present invention comprises a radial flow sedimentation tank 1, a water outlet channel 2 arranged on the upper portion of the inner side wall of the radial flow sedimentation tank 1, a water outlet channel main pipe 9 communicated with the water outlet channel 2, a water inlet guide cylinder 3 positioned in the middle of the radial flow sedimentation tank 1, a mud scraper 4 and a mud discharge pipe 8 arranged at the bottom of the radial flow sedimentation tank 1, and a fixed water level gauge 18 positioned on the tank wall. The water outlet channel 2 is arranged below the top edge of the inner wall of the radial flow sedimentation tank 1. The main outlet channel pipe 9 is located below the outlet channel 2, and the top of the main outlet channel pipe is fixedly connected with the bottom surface of the outlet channel 2 to realize the communication between the two. The main outlet channel pipe 9 extends downward from the bottom of the outlet channel 2, extends in a direction perpendicular to the wall of the basin toward the radial flow sedimentation basin, extends to the outside of the basin, and then extends downward in a direction parallel to the wall of the basin.
The concrete bottom plate of outlet channel 2 evenly sets up a plurality of apopores 10, and apopore 10 can design for the back taper structure, and apopore 10 uses out the water to extract to pull out the bolt 17 sealed, goes out the water and draws the bolt card and locate in the apopore. The diameter of the hole opening of the water outlet hole 10 is phi 100 mm-phi 150mm, and the water outlet lifting bolt 17 is also designed into an inverted cone structure. When the surface water can not be discharged from the outlet canal weir, the outlet lifting plug 17 is lifted, and at the moment, the clear water at the same height with the outlet canal 2 at the upper part in the pool enters the outlet canal 2 through the water outlet hole 10 and is discharged. The water extraction plug 17 is made of wood or rubber.
At least two layered perforated water outlet pipes 11 are laid along the inner wall of the radial flow sedimentation tank 1 from top to bottom according to a certain distance, such as 500mm and 600mm, and are fixed on the wall of the tank by using brackets 12, the pipe diameters of the layered perforated water outlet pipes 11 are 200mm-300mm, the surfaces of the layered perforated water outlet pipes 11 are staggered and uniformly perforated, and the hole diameters are 25mm-30 mm. And each layered perforated water outlet pipe 11 is connected with the water outlet channel main pipe 9 through a communication valve 13 outside the pool. The water outlet pipe extends from the inside of the tank to the outside of the tank, and the extension direction of the water outlet pipe is vertical to the wall of the tank.
The layered water outlet pipe 11 is provided with a sampling pipe with a sampling port 14-1 outside the radial flow sedimentation tank 1, the outer wall of the radial flow sedimentation tank 1 is provided with a back flush hose 15-1 and a fixedly laid back flush pipe 15, the back flush pipe 15 is connected with the back flush hose 15-1, and the sampling port 14-1 (bayonet type) and the back flush hose 15-1 (one end is bayonet type) can be quickly connected by bayonet. The sampling pipe is provided with a sampling valve 14 which can be used as a back flushing valve at the same time, and a one-way valve 16 is arranged on a back flushing pipe 15. When the water level in the radial flow sedimentation tank 1 drops to the water outlet area of the layered water outlet pipe 11, the sampling valve 14 is opened to sample at the sampling port 14-1, the water quality SS is detected, and when the requirement is met, the communication valve 13 corresponding to the layered water outlet pipe 11 is opened to drain water. The sampling pipe can be used as a backwashing pipe at the same time, the backwashing hose 15-1 is periodically connected with the water intake 14-1, the one-way valve 16 and the water intake valve 14 are opened, the communicating valve 13 is closed, and pressure water in the backwashing pipe 15 enters the layered water outlet pipe 11 to flush accumulated mud.
A water level meter 18 is arranged in the radial flow sedimentation tank 1, so that the effluent water level can be monitored in real time.
According to the invention, the layered water outlet pipe 11 and the sampling port 14-1 are arranged on the radial flow sedimentation tank 1 in a layered manner, and when the water outlet of the sampling port 14-1 meets the requirement, the water outlet is collected; meanwhile, a cleaning device (namely a backwashing pipe 15) is arranged to periodically perform high-pressure cleaning on the layered water outlet pipe 11 by using cleaning water to prevent sludge accumulation, so that the normal operation of the device is ensured.
The embodiment of the invention also provides an application method of the adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank, which comprises the following steps:
A. after the water inlet pipe 5 of the radial sedimentation tank 1 stops feeding water, a flocculating agent is continuously fed through the dosing pipe 19 until a large amount of alum flocs appear, the dosing is stopped, at the moment, the surface layer water 6-1 at the weir top of the weir crest of the water outlet channel 2 of the radial sedimentation tank 1 is completely discharged from the water outlet channel 2, the water level falls to the upper clear water area 6-2 and cannot be discharged, after the tank water is further settled, the water outlet lifting plug 17 is lifted, and the upper clear water 6-2 flows upwards into the water outlet channel 2 through the water outlet hole 10 and is discharged from the water outlet channel main pipe 9;
B. the pond water continues to fall to the middle layer clear water area 6-3, the sampling valve 14 on the water outlet pipe 11 with the layered opening at the top is opened, after the detected water quality SS is qualified, the communicating valve 13 between the water outlet pipe 11 with the layered opening at the top and the water outlet main pipe 9 is opened, and the clear water in the middle layer clear water area 6-3 is discharged to the water outlet main pipe 9 from the water outlet pipe 11 with the layered opening at the top;
C. the pond water continues to fall to a deep clear water area 6-4, an upper sampling valve 14 of a lower part layer of perforated water outlet pipe 11 is opened, after the detected water quality SS is qualified, a communication valve 13 between the lower part layer of perforated water outlet pipe 11 and a water outlet channel main pipe 9 is opened, and clear water in the deep clear water area 6-4 is discharged to the water outlet channel main pipe 9 from the lower part layer of perforated water outlet pipe 11;
D. finally, the radial flow sedimentation tank 1 leaves a sludge accumulation area 7, and the concentrated sludge is discharged through a sludge discharge pipe 8.
Furthermore, the backwashing hose 15-1 and the sampling port 14-1 are connected in a buckling mode at regular intervals, the one-way valve 16 and the sampling valve 14 are opened, clean water with certain water pressure in the backwashing pipe 15 washes the layered perforated water outlet pipes 11 respectively, the backwashing water pressure is not lower than 0.25Mpa, and the one-way valve 16 prevents backwashing water from flowing back to pollute an external clean water pipe network.
When water is normally fed in and discharged out, the communication valve 13, the sampling valve 14 and the one-way valve 16 of each layered water outlet pipe 11 are closed.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a water installation with adjustable grit waste water radial flow sedimentation tank, includes radial flow sedimentation tank (1), is located intake draft tube (3) in the middle of radial flow sedimentation tank (1), locates mud scraper (4) and mud pipe (8) of radial flow sedimentation tank (1) bottom, its characterized in that: the upper part of the inner side wall of the radial flow sedimentation tank (1) is provided with a water outlet channel (2), and the bottom surface of the water outlet channel (2) is provided with a water outlet channel main pipe (9) communicated with the outside; at least two layered perforated water outlet pipes (11) are sequentially arranged along the inner wall side of the radial flow sedimentation tank (1) from top to bottom at intervals, each layered perforated water outlet pipe (11) is fixed on the wall of the radial flow sedimentation tank (1) by using a layered perforated water outlet pipe bracket (12), and each layered perforated water outlet pipe (11) is connected with a water outlet main pipe (9) outside the tank through a communication valve (13); a layered water outlet pipe (11) is provided with a sampling pipe with a sampling port (14-1) outside the radial flow sedimentation tank (1), and the sampling pipe is provided with a sampling valve (14); a backwashing hose (15-1) and a fixedly laid backwashing pipe (15) are arranged on the outer wall of the radial flow sedimentation tank (1); the back washing pipe (15) can be communicated with the layered perforated water outlet pipe (11) through a back washing hose (15-1).
2. The adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank as claimed in claim 1, characterized in that: the sampling port (14-1) can be connected with a quick bayonet of a backwashing hose (15-1) so that the sampling pipe can be used as a backwashing pipe at the same time, a one-way valve (16) is arranged on the backwashing pipe (15), and the sampling valve (14) arranged on the sampling pipe can be used as a backwashing valve at the same time.
3. The adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank as claimed in claim 1, characterized in that: the device also comprises a water level gauge (18) arranged in the radial flow sedimentation tank (1) and used for monitoring water level layering water taking in the tank.
4. The adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank as claimed in claim 1, characterized in that: also comprises a water inlet pipe (5) and a chemical feeding pipe (19) which are connected with the middle water inlet guide cylinder (3).
5. The adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank as claimed in claim 1, characterized in that: the concrete bottom plate of outlet channel (2) evenly sets up a plurality of apopores (10), and apopore (10) use a water extraction to pull out bolt (17) sealed.
6. The adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank as claimed in claim 5, characterized in that: the water outlet hole (10) and the water outlet lifting bolt (17) are designed to be inverted cone structures.
7. The adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank as claimed in claim 1, characterized in that: the pipe diameter of the layered perforated water outlet pipe (11) is 200mm-300mm, the surface of the layered perforated water outlet pipe (11) is uniformly perforated in a staggered mode, and the aperture is 25mm-30 mm.
8. The application method of the adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps:
A. after the water inlet pipe (5) of the radial sedimentation tank (1) stops feeding water, a flocculating agent is continuously fed through a dosing pipe (19) until a large amount of alum flocs appear, dosing is stopped, at the moment, the surface layer water (6-1) at the weir top of a weir crest of a weir channel (2) of the radial sedimentation tank (1) is completely discharged from the weir channel (2), the water level falls into an upper layer clear water area (6-2) and cannot be discharged, after the tank water is further settled statically, a water extraction plug (17) is extracted, the upper layer clear water (6-2) flows upwards into the weir channel (2) through a water outlet hole (10) and is discharged from a main water channel pipe (9);
B. the pond water continuously falls to the middle layer clear water area (6-3), a sampling valve (14) on the top layered opening water outlet pipe (11) is opened, after the water quality is detected to be qualified, a communicating valve (13) between the top layered opening water outlet pipe (11) and the water outlet main pipe (9) is opened, and clear water in the middle layer clear water area (6-3) is discharged to the water outlet main pipe (9) from the top layered opening water outlet pipe (11);
C. the pond water continues to fall to a deep clear water area (6-4), an upper sampling valve (14) of a lower part layer of perforated water outlet pipe (11) is opened, after the water quality is detected to be qualified, a communicating valve (13) between the lower part layer of perforated water outlet pipe (11) and a water outlet main pipe (9) is opened, and clear water in the deep clear water area (6-4) is discharged to the water outlet main pipe (9) from the lower part layer of perforated water outlet pipe (11);
D. finally, the radial flow sedimentation tank (1) leaves a sludge accumulation area (7), and the concentrated slurry is discharged from a sludge discharge pipe (8).
9. The application method of the adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank as claimed in claim 8, which is characterized in that: further comprising the steps of: the backwashing hose (15-1) and the sampling port (14-1) are connected in a buckling mode at regular intervals, the sampling valve (14) is opened, clean water with certain water pressure in the backwashing pipe (15) washes the layered perforated water outlet pipes (11) respectively, the backwashing water pressure is not lower than 0.25Mpa, and the one-way valve (16) prevents backwashing water from flowing back to pollute an external clean water pipe network.
10. The application method of the adjustable water outlet device of the sandstone wastewater radial flow sedimentation tank as claimed in claim 8, which is characterized in that: when water is normally fed in and discharged out, the communication valve (13), the sampling valve (14) and the one-way valve (16) of each layered water outlet pipe (11) are closed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298762.6A CN112619212A (en) | 2020-11-19 | 2020-11-19 | Adjustable water outlet device for sandstone wastewater radial flow sedimentation tank and application method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011298762.6A CN112619212A (en) | 2020-11-19 | 2020-11-19 | Adjustable water outlet device for sandstone wastewater radial flow sedimentation tank and application method |
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| JP2000056084A (en) * | 1998-08-05 | 2000-02-25 | Toshiba Eng Co Ltd | Precipitating/separating tank for liquid waste processing system |
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